/usr/lib/ruby/ is in asciidoctor 1.5.4-1.
This file is owned by root:root, with mode 0o755.
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/usr/lib/ruby/vendor_ruby/
/usr/lib/ruby/vendor_ruby/asciidoctor.rb
/usr/lib/ruby/vendor_ruby/asciidoctor/
/usr/lib/ruby/vendor_ruby/asciidoctor/parser.rb
/usr/lib/ruby/vendor_ruby/asciidoctor/timings.rb
/usr/lib/ruby/vendor_ruby/asciidoctor/converter.rb
/usr/lib/ruby/vendor_ruby/asciidoctor/section.rb
/usr/lib/ruby/vendor_ruby/asciidoctor/document.rb
/usr/lib/ruby/vendor_ruby/asciidoctor/converter/
/usr/lib/ruby/vendor_ruby/asciidoctor/converter/base.rb
/usr/lib/ruby/vendor_ruby/asciidoctor/converter/template.rb
/usr/lib/ruby/vendor_ruby/asciidoctor/converter/manpage.rb
/usr/lib/ruby/vendor_ruby/asciidoctor/converter/composite.rb
/usr/lib/ruby/vendor_ruby/asciidoctor/converter/docbook45.rb
/usr/lib/ruby/vendor_ruby/asciidoctor/converter/html5.rb
/usr/lib/ruby/vendor_ruby/asciidoctor/converter/docbook5.rb
/usr/lib/ruby/vendor_ruby/asciidoctor/converter/factory.rb
/usr/lib/ruby/vendor_ruby/asciidoctor/table.rb
/usr/lib/ruby/vendor_ruby/asciidoctor/cli/
/usr/lib/ruby/vendor_ruby/asciidoctor/cli/options.rb
/usr/lib/ruby/vendor_ruby/asciidoctor/cli/invoker.rb
/usr/lib/ruby/vendor_ruby/asciidoctor/abstract_block.rb
/usr/lib/ruby/vendor_ruby/asciidoctor/abstract_node.rb
/usr/lib/ruby/vendor_ruby/asciidoctor/reader.rb
/usr/lib/ruby/vendor_ruby/asciidoctor/inline.rb
/usr/lib/ruby/vendor_ruby/asciidoctor/core_ext.rb
/usr/lib/ruby/vendor_ruby/asciidoctor/extensions.rb
/usr/lib/ruby/vendor_ruby/asciidoctor/cli.rb
/usr/lib/ruby/vendor_ruby/asciidoctor/stylesheets.rb
/usr/lib/ruby/vendor_ruby/asciidoctor/list.rb
/usr/lib/ruby/vendor_ruby/asciidoctor/substitutors.rb
/usr/lib/ruby/vendor_ruby/asciidoctor/path_resolver.rb
/usr/lib/ruby/vendor_ruby/asciidoctor/helpers.rb
/usr/lib/ruby/vendor_ruby/asciidoctor/core_ext/
/usr/lib/ruby/vendor_ruby/asciidoctor/core_ext/object/
/usr/lib/ruby/vendor_ruby/asciidoctor/core_ext/object/nil_or_empty.rb
/usr/lib/ruby/vendor_ruby/asciidoctor/core_ext/symbol/
/usr/lib/ruby/vendor_ruby/asciidoctor/core_ext/symbol/length.rb
/usr/lib/ruby/vendor_ruby/asciidoctor/core_ext/string/
/usr/lib/ruby/vendor_ruby/asciidoctor/core_ext/string/chr.rb
/usr/lib/ruby/vendor_ruby/asciidoctor/version.rb
/usr/lib/ruby/vendor_ruby/asciidoctor/block.rb
/usr/lib/ruby/vendor_ruby/asciidoctor/attribute_list.rb
/usr/lib/ruby/vendor_ruby/asciidoctor/callouts.rb